# Data Structure Display vs Easy Probability

The clearest difference is review sentiment: Data Structure Display at 62% against Easy Probability's 0%. Data Structure Display also leads on ratings volume (676 vs 5) and rating (4.5 vs 4.2). Easy Probability's advantage is update cadence (every 2 weeks vs every 5 months) and iOS requirement (8.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Data Structure Display sells 1 one-off in-app purchase and Easy Probability sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Data Structure Display holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Data Structure Display has 676 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 62% of Data Structure Display's written reviews are positive against 0% of Easy Probability's.

Data Structure Display ships an update every 5 months, Easy Probability every 2 weeks. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Data Structure Display | Easy Probability |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (676 ratings)](https://appshunter.io/ios/app/data-structure-display/id1455489695/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/easy-probability/id1503574851/reviews) |
| Number of ratings | **676** | 5 |
| Positive reviews | **61.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 39 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Jinan Matrix Information Technology Co., Ltd.](https://appshunter.io/developer/1009091575) | [Jelle Van den Eynde](https://appshunter.io/developer/1494263169) |

## What reviewers say

### Data Structure Display

[App page](https://appshunter.io/ios/app/data-structure-display/id1455489695)

Explore and learn data structures through dynamic debugging and visual observation of changes. This app covers linear structures, trees, graphs, and recursive algorithms like the Tower of Hanoi, offering interactive learning experiences.

**Highlights:** Dynamic data structure debugging, Visual observation of data structure changes, Learn linear structures (arrays, lists, queues, stacks), Explore tree structures (binary, AVL, red-black, heap), Understand graph structures and algorithms, Debug recursive algorithms like Tower of Hanoi

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all data structures | $2.99 | one-time |

**What reviewers like**

- 📚 Excellent for DSA learning and studying
- ✨ Interactive components and pseudo code quality
- 👍 Good reference material for beginners
- 🎓 Unique educational content

**What reviewers complain about**

- 🔒 90% of content locked behind $2.99 paywall
- 📖 Incomplete coverage of data structures
- ✍️ Poor grammar and spelling
- 📱 No dark mode support on macOS
- 🔔 Excessive review prompts

**Reported bugs**

- Aggressive review request frequency
- Inconsistent dark mode functionality between iOS and macOS

**Requested features**

- Dark mode implementation
- Comprehensive coverage of all data structure variants
- More practical exercises and problems
- Ad-supported free tier instead of paywall


### Easy Probability

[App page](https://appshunter.io/ios/app/easy-probability/id1503574851)

Master basic probability with interactive quizzes designed to improve your academic performance and decision-making skills. The app offers a gradual learning curve, starting with simple problems and progressing to more complex challenges, all without advertisements.

**Highlights:** Gradual learning curve, Interactive quizzes, Voice-over narration, Voice input for answers, Dark theme support, Portrait and landscape modes

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Module 2 quizzes | $0.99 | one-time |


## Frequently asked questions

### Is Data Structure Display free?

Data Structure Display is free to download, with in-app purchases available.

### Is Easy Probability free?

Easy Probability is free to download, with in-app purchases available.

### Which has better reviews, Data Structure Display or Easy Probability?

Data Structure Display is rated higher. Data Structure Display averages 4.5 out of 5 from 676 ratings, while Easy Probability averages 4.2 from 5 ratings.

### Do Data Structure Display or Easy Probability have ads?

Neither Data Structure Display nor Easy Probability shows ads.

### Which is updated more often, Data Structure Display or Easy Probability?

Data Structure Display ships an update every 5 months, and Easy Probability every 2 weeks. Most recently, Data Structure Display was updated on October 3, 2026 and Easy Probability on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*